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Finding the Fourth Proportional to 220,769.29, 330,954.27 and 80,495.11

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Solution

The fourth proportional to 220,769.29, 330,954.27 and 80,495.11 is: 120,669.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,769.29 : 330,954.27 = 80,495.11 : x
  2. Step 2: Convert to fraction form
    220,769.29/330,954.27 = 80,495.11/x
  3. Step 3: Cross multiply
    220,769.29x = 330,954.27 × 80,495.11
  4. Step 4: Simplify right side
    220,769.29x = 26,640,200,368.62
  5. Step 5: Solve for x
    x = 26,640,200,368.62/220,769.29
  6. Step 6: Final answer
    x = 120,669.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.